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Unified Diff: gcc/gmp/mpn/cray/add_n.c

Issue 3050029: [gcc] GCC 4.5.0=>4.5.1 (Closed) Base URL: ssh://git@gitrw.chromium.org:9222/nacl-toolchain.git
Patch Set: Created 10 years, 5 months ago
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Index: gcc/gmp/mpn/cray/add_n.c
diff --git a/gcc/gmp/mpn/cray/add_n.c b/gcc/gmp/mpn/cray/add_n.c
deleted file mode 100644
index e4f8a0da9b08fbd160171f6d88a494c3b2dc288b..0000000000000000000000000000000000000000
--- a/gcc/gmp/mpn/cray/add_n.c
+++ /dev/null
@@ -1,80 +0,0 @@
-/* Cray PVP mpn_add_n -- add two limb vectors and store their sum in a third
- limb vector.
-
-Copyright 1996, 2000, 2001 Free Software Foundation, Inc.
-
-This file is part of the GNU MP Library.
-
-The GNU MP Library is free software; you can redistribute it and/or modify
-it under the terms of the GNU Lesser General Public License as published by
-the Free Software Foundation; either version 3 of the License, or (at your
-option) any later version.
-
-The GNU MP Library is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
-License for more details.
-
-You should have received a copy of the GNU Lesser General Public License
-along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
-
-/* This code runs at 4 cycles/limb. It may be possible to bring it down
- to 3 cycles/limb. */
-
-#include "gmp.h"
-#include "gmp-impl.h"
-
-mp_limb_t
-mpn_add_n (mp_ptr rp, mp_srcptr up, mp_srcptr vp, mp_size_t n)
-{
- mp_limb_t cy[n];
- mp_limb_t a, b, r, s0, c0, c1;
- mp_size_t i;
- int more_carries;
-
- /* Main add loop. Generate a raw output sum in rp[] and a carry vector
- in cy[]. */
-#pragma _CRI ivdep
- for (i = 0; i < n; i++)
- {
- a = up[i];
- b = vp[i];
- s0 = a + b;
- rp[i] = s0;
- c0 = ((a & b) | ((a | b) & ~s0)) >> 63;
- cy[i] = c0;
- }
- /* Carry add loop. Add the carry vector cy[] to the raw sum rp[] and
- store the new sum back to rp[0]. If this generates further carry, set
- more_carries. */
- more_carries = 0;
-#pragma _CRI ivdep
- for (i = 1; i < n; i++)
- {
- r = rp[i];
- c0 = cy[i - 1];
- s0 = r + c0;
- rp[i] = s0;
- c0 = (r & ~s0) >> 63;
- more_carries += c0;
- }
- /* If that second loop generated carry, handle that in scalar loop. */
- if (more_carries)
- {
- mp_limb_t cyrec = 0;
- /* Look for places where rp[k] is zero and cy[k-1] is non-zero.
- These are where we got a recurrency carry. */
- for (i = 1; i < n; i++)
- {
- r = rp[i];
- c0 = (r == 0 && cy[i - 1] != 0);
- s0 = r + cyrec;
- rp[i] = s0;
- c1 = (r & ~s0) >> 63;
- cyrec = c0 | c1;
- }
- return cyrec | cy[n - 1];
- }
-
- return cy[n - 1];
-}
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